ループ有りの迷路が作れたので残しておく ゲームだと背後に回り込むとかできるので 使えそう <!DOCTYPE html> <html lang="en"> <script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/1.5.0/p5.js"></script> <div id="p5canvas"></div> <script> class mymaze { writex = 0; writey = 0; msize = 0; state = 0; possiblesize = 0; maze = []; xtable = [2, -2, 0, 0]; ytable = [0, 0, 2, -2]; constructor(n) { this.msize = n; } mazeloop() { switch (this.state) { //pass through candidate points case 0: this.writex += 2; if (this.writex > this.msize - 2) { this.writex = 2; this.writey += 2; } if (this.writey > this.msize - 2) this.writey = 2; if (this.maze[this.writey][this.writex] == 0) { this.maze[this.writey][this.writex] = 2; this.possiblesize--; this.state = 1; } break; case 1: let direction = parseInt(Math.random() * 4); let addx ...